20545850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{433}}^1$

素因数の和:531

約数の個数: 48

約数和(自身を含む): 41815032

約数和(自身を除く): 21269182

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 73, 130, 146, 325, 365, 433, 650, 730, 866, 949, 1825, 1898, 2165, 3650, 4330, 4745, 5629, 9490, 10825, 11258, 21650, 23725, 28145, 31609, 47450, 56290, 63218, 140725, 158045, 281450, 316090, 410917, 790225, 821834, 1580450, 2054585, 4109170, 10272925, 20545850]

約数ペア:

[(1, 20545850), (2, 10272925), (5, 4109170), (10, 2054585), (13, 1580450), (25, 821834), (26, 790225), (50, 410917), (65, 316090), (73, 281450), (130, 158045), (146, 140725), (325, 63218), (365, 56290), (433, 47450), (650, 31609), (730, 28145), (866, 23725), (949, 21650), (1825, 11258), (1898, 10825), (2165, 9490), (3650, 5629), (4330, 4745)]